US5114983A - Use of polyarylene sulphides for the production of a structural foam resistant to high temperatures, process for the preparation of this foam, and moldings obtainable by this process - Google Patents
Use of polyarylene sulphides for the production of a structural foam resistant to high temperatures, process for the preparation of this foam, and moldings obtainable by this process Download PDFInfo
- Publication number
- US5114983A US5114983A US07/543,555 US54355590A US5114983A US 5114983 A US5114983 A US 5114983A US 54355590 A US54355590 A US 54355590A US 5114983 A US5114983 A US 5114983A
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- high temperatures
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- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000000465 moulding Methods 0.000 title claims abstract description 15
- 229920000412 polyarylene Polymers 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000006260 foam Substances 0.000 title claims abstract description 9
- 238000005187 foaming Methods 0.000 title claims abstract description 4
- 150000003568 thioethers Chemical class 0.000 title abstract description 10
- 238000002360 preparation method Methods 0.000 title abstract description 3
- 239000004616 structural foam Substances 0.000 title description 13
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001746 injection moulding Methods 0.000 claims description 9
- 239000004604 Blowing Agent Substances 0.000 claims description 8
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 8
- 239000002666 chemical blowing agent Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 3
- 150000008064 anhydrides Chemical class 0.000 claims description 2
- 150000003851 azoles Chemical class 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 claims 1
- 229920001281 polyalkylene Polymers 0.000 claims 1
- 229920005668 polycarbonate resin Polymers 0.000 claims 1
- 239000004431 polycarbonate resin Substances 0.000 claims 1
- -1 polyphenylene Polymers 0.000 abstract description 7
- 229920000265 Polyparaphenylene Polymers 0.000 abstract description 4
- 229920000515 polycarbonate Polymers 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004425 Makrolon Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- OFNISBHGPNMTMS-UHFFFAOYSA-N 3-methylideneoxolane-2,5-dione Chemical compound C=C1CC(=O)OC1=O OFNISBHGPNMTMS-UHFFFAOYSA-N 0.000 description 1
- 241000531908 Aramides Species 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- 239000004741 Tedur® Substances 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000012899 standard injection Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000009757 thermoplastic moulding Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2381/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Polysulfones; Derivatives of such polymers
- C08J2381/02—Polythioethers; Polythioether-ethers
Definitions
- the invention relates to the use of polyarylene sulphides (PAS), preferably polyphenylene sulphide (PPS), for the production of a structural foam, a process for the production of this foam, and mouldings obtainable by this process.
- PAS polyarylene sulphides
- PPS polyphenylene sulphide
- thermoplastic injection moulding materials can be processed to mouldings or extrudates by the use of chemical or physical blowing agents with expansion in the mould using the structural foam injection moulding process.
- thermoplastic moulding materials resistant to high temperatures can be prepared in a simple process.
- the invention relates to the use of polyarylene sulphides (PAS), preferably polyphenylene sulphides (PPS), optionally as a mixture with fillers, for the production of structural foam.
- PAS polyarylene sulphides
- PPS polyphenylene sulphides
- Polyarylene sulphides which can be used according to the invention are known (for example U.S. Pat. No. 3,354,129 and EP-A 171 021) and are commercially available (for example TEDUR®).
- the polyarylene sulphides can be mixed from 0 to 80% by weight, preferably from 40-60% by weight (based on polyarylene sulphide) of fillers.
- the fillers used may be organic and/or inorganic fillers, for example glass fibres, glass spheres, silicates, such as mice or talc, carbonates, such as a magnesium carbonate, sulphates, such as BaSO 4 or CaSO 4 , oxides such as TiO 2 , carbon fibres, aramide fibres, carbon, metals, metal fibres, etc.
- the invention also relates to a process for the production of a structural foam, characterised in that 0.1 to 5% by weight of a blowing agent masterbatch is added to polyarylene sulphides, and the mixture is homogeneous and is expanded at 300° to 360° C., and mouldings obtainable by this process.
- a blowing agent masterbatch is used. This contains 0.2-10% by weight of a chemical blowing agent, preferably 3-5% by weight.
- the base resin used for this masterbatch is a partially crystalline or amorphous thermoplastic resin resistant to high temperatures, preferably a polycarbonate, such as Makrolon®, having a relative viscosity (in CH 2 Cl 2 , 25° C./ 0.5 g per 100 ml) of 1.260-1.285.
- This blowing agent masterbatch is added to the polyarylene sulphide as the dry mixture in amounts of 0.2-5% by weight (based on PAS), preferably 08-1.5% by weight. Mixing is then carried out for 10-40 minutes, preferably 15-25 minutes, on a drum tumbler or other suitable mixing device.
- the chemical blowing agents used for expansion are customary substances, for example azo compounds, such as azodicarboxamide, anhydrides, such as itaconic anhydride, azoles, such as 5-phenyltetrazole, etc.
- customary "kickers" for example zinc oxide, can be used to accelerate the decomposition.
- the polyarylene sulphide foam is produced at processing temperatures of 300°-360° C., which are usual for polyarylene sulphide (injection moulding or extrusion process), in the air under atmospheric pressure. If necessary, the procedure can be carried out in the absence of O 2 , under an inert gas, (for example N 2 ).
- Mouldings produced in the structural foam moulding process from the above-mentioned mixtures have a uniform cell structure (see FIG. 1), the typical layer of a structural foam with uniform cell structure being observed. A density reduction of 35-50% by weight, preferably 40-45% by weight, is obtained in the moulding.
- Mouldings produced according to the invention have the properties known for polyarylene sulphides, such as high heat resistance, rigidity, resistance to chemicals and low flammability.
- 1% by weight of a masterbatch of a commercial polycarbonate having a relative viscosity of 1280 and 4% by weight of 5-phenyltetrazole are added to 10 kg of a polyphenylene sulphide prepared according to EP-A 171 021 and provided with 40% by weight of a commercial glass fibre, and mixing is carried out for 20 minutes on a drum tumbler. Processing is then carried out on a standard injection moulding machine under the conditions customary for the structural foam injection moulding process.
- the mouldings obtained have a flexural strength of 120 N/mm 2 , an outer fibre elongation of 1.9%, a flexural modulus of elasticity of b 9000 N/mm 2 and an impact strength of 10 kg/cm 2 .
- the heat distortion temperature HDT-A (1.81 N/mm 2 ) is 200° C.
- the UL 94 (8 mm) classification gives VO (by our measurements).
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the use of polyarylene sulphides (PAS), preferably polyphenylene sulphide (PPS) for the preparation of a structrual foam, a process for the production of this foam, and moldings obtainable by this process.
Description
The invention relates to the use of polyarylene sulphides (PAS), preferably polyphenylene sulphide (PPS), for the production of a structural foam, a process for the production of this foam, and mouldings obtainable by this process.
It is known that thermoplastic injection moulding materials can be processed to mouldings or extrudates by the use of chemical or physical blowing agents with expansion in the mould using the structural foam injection moulding process.
However, mouldings produced in the low pressure structural foam process (LPSF process) show only a small density reduction of 2-3% by weight (Plastic Design Forum July/August 1988). Another possibility for obtaining parts produced by the structural foam injection moulding process is described in EP-A 25 108. However, this process involves considerable chemical modifications (sulfphone carbonates, catalysts, heating).
Usually, however, mouldings or extrudates produced by the structural injection moulding process are produced by metering in a blowing agent masterbatch (see: Makrolon Polycarbonate Structural Foam brochure, Mobay Chemical Corp. 1985). However, the use of blowing agent masterbatches is often restricted since they must not expand during the preparation of masterbatches. On the other hand, a chemical blowing agent must undergo controlled decomposition in the structural injection moulding process so that a moulding is formed having a cell structure as uniform as possible. It is thus ensured that there cannot be any mechanically weak points with nonuniform foam structure.
The use of chemical blowing agents for the production of foamed thermoplastics resistant to high temperatures has been unsuccessful to-date for the above-mentioned reasons.
It has now been found, surprisingly, that thermoplastic moulding materials resistant to high temperatures can be prepared in a simple process.
The invention relates to the use of polyarylene sulphides (PAS), preferably polyphenylene sulphides (PPS), optionally as a mixture with fillers, for the production of structural foam.
Polyarylene sulphides which can be used according to the invention are known (for example U.S. Pat. No. 3,354,129 and EP-A 171 021) and are commercially available (for example TEDUR®).
For the production of the foam, the polyarylene sulphides can be mixed from 0 to 80% by weight, preferably from 40-60% by weight (based on polyarylene sulphide) of fillers. The fillers used may be organic and/or inorganic fillers, for example glass fibres, glass spheres, silicates, such as mice or talc, carbonates, such as a magnesium carbonate, sulphates, such as BaSO4 or CaSO4, oxides such as TiO2, carbon fibres, aramide fibres, carbon, metals, metal fibres, etc.
The invention also relates to a process for the production of a structural foam, characterised in that 0.1 to 5% by weight of a blowing agent masterbatch is added to polyarylene sulphides, and the mixture is homogeneous and is expanded at 300° to 360° C., and mouldings obtainable by this process.
In the production of the foam, a blowing agent masterbatch is used. This contains 0.2-10% by weight of a chemical blowing agent, preferably 3-5% by weight. The base resin used for this masterbatch is a partially crystalline or amorphous thermoplastic resin resistant to high temperatures, preferably a polycarbonate, such as Makrolon®, having a relative viscosity (in CH2 Cl2, 25° C./ 0.5 g per 100 ml) of 1.260-1.285.
This blowing agent masterbatch is added to the polyarylene sulphide as the dry mixture in amounts of 0.2-5% by weight (based on PAS), preferably 08-1.5% by weight. Mixing is then carried out for 10-40 minutes, preferably 15-25 minutes, on a drum tumbler or other suitable mixing device.
The chemical blowing agents used for expansion are customary substances, for example azo compounds, such as azodicarboxamide, anhydrides, such as itaconic anhydride, azoles, such as 5-phenyltetrazole, etc. Customary "kickers", for example zinc oxide, can be used to accelerate the decomposition.
The polyarylene sulphide foam is produced at processing temperatures of 300°-360° C., which are usual for polyarylene sulphide (injection moulding or extrusion process), in the air under atmospheric pressure. If necessary, the procedure can be carried out in the absence of O2, under an inert gas, (for example N2).
Mouldings produced in the structural foam moulding process from the above-mentioned mixtures have a uniform cell structure (see FIG. 1), the typical layer of a structural foam with uniform cell structure being observed. A density reduction of 35-50% by weight, preferably 40-45% by weight, is obtained in the moulding.
Mouldings produced according to the invention have the properties known for polyarylene sulphides, such as high heat resistance, rigidity, resistance to chemicals and low flammability.
These structural foams are used where, in addition to the properties familiar for polyarylene sulphides, weight reduction, thermal insulation and good flame-retardant properties are also important. Due to the good flowability of this resin, large sink free parts can be produced.
Applications for mouldings produced according to the invention are in the aviation and motor vehicle market, in the field of large partitions for thermal insulation and in the construction of chemical plants and apparatuses.
It is also possible to extrudates this material, in shapes, such as, pipes, sheets and other hollow articles. All mouldings and extrudates can be coated, metalised or adhesively bonded using known technologies or can be moulded by inserting metal parts or foils in an injection mould.
1% by weight of a masterbatch of a commercial polycarbonate having a relative viscosity of 1280 and 4% by weight of 5-phenyltetrazole are added to 10 kg of a polyphenylene sulphide prepared according to EP-A 171 021 and provided with 40% by weight of a commercial glass fibre, and mixing is carried out for 20 minutes on a drum tumbler. Processing is then carried out on a standard injection moulding machine under the conditions customary for the structural foam injection moulding process.
A structural foam having a uniform pore structure, a pore size of about 0.05 to 0.5 mm (see FIG. 1) and a specific gravity of 0.90 g/cm3 is obtained. A base resin which has a specific gravity of 1.65 g/cm3, corresponds to a density reduction of 45.5% by weight.
The mouldings obtained have a flexural strength of 120 N/mm2, an outer fibre elongation of 1.9%, a flexural modulus of elasticity of b 9000 N/mm2 and an impact strength of 10 kg/cm2.
The heat distortion temperature HDT-A (1.81 N/mm2) is 200° C. The UL 94 (8 mm) classification gives VO (by our measurements).
A resin described in Example 1 is mixed with 3% by weight of a blowing agent masterbatch described in Example 1 on a drum tumbler for 20 minutes. Injection moulded finished parts showed a weight reduction of 50% by weight (density=0.84 g/cm3).
Claims (1)
1. Process for production of a molded article of polyalkylene foam which comprises homogeneous dry blending for 10 for 40 minutes polyarylene sulfide with 0.1 to 5% by weight of a blowing agent masterbatch which contains 0.2 to 10% by weight of a chemical blowing agent selected from the group consisting of azo compounds, anhydrides and azoles with or without zinc oxide, in an amorphous or partially crystalline polycarbonate resin resistant to high temperatures and having a relative viscosity of 1.260-1.285 measured in CH2 Cl2 at 25° C. at 0.5 gram per 100 ml, then at 300° to 360° C. foaming and molding the blended mixture by injection or extrusion molding.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3922038A DE3922038A1 (en) | 1989-07-05 | 1989-07-05 | USE OF POLYARYL SULFIDES FOR PRODUCING A HIGH-TEMPERATURE-RESISTANT TSG FOAM, METHOD FOR PRODUCING THIS FOAM AND MOLDING OBTAIN THEREFORE AVAILABLE |
| DE3922038 | 1989-07-05 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US07/783,504 Division US5126380A (en) | 1989-07-05 | 1991-10-28 | Use of polyarylene sulphides for the production of a structural foam resistant to high temperatures, process for the preparation of this foam, and mouldings obtainable by this process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US5114983A true US5114983A (en) | 1992-05-19 |
Family
ID=6384311
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US07/543,555 Expired - Fee Related US5114983A (en) | 1989-07-05 | 1990-06-26 | Use of polyarylene sulphides for the production of a structural foam resistant to high temperatures, process for the preparation of this foam, and moldings obtainable by this process |
| US07/783,504 Expired - Fee Related US5126380A (en) | 1989-07-05 | 1991-10-28 | Use of polyarylene sulphides for the production of a structural foam resistant to high temperatures, process for the preparation of this foam, and mouldings obtainable by this process |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US07/783,504 Expired - Fee Related US5126380A (en) | 1989-07-05 | 1991-10-28 | Use of polyarylene sulphides for the production of a structural foam resistant to high temperatures, process for the preparation of this foam, and mouldings obtainable by this process |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US5114983A (en) |
| EP (1) | EP0406634B1 (en) |
| JP (1) | JPH03170536A (en) |
| DE (2) | DE3922038A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5412062A (en) * | 1991-09-09 | 1995-05-02 | Cookson Group Plc | Thermally depolymerisable polyoxalate or polymalonate polymers containing hydrocarbon groups with 6-30 carbon atoms and a tertiary carbon atoms attached to bridging oxygen atom |
| US5547996A (en) * | 1994-07-29 | 1996-08-20 | The Center For Innovative Technology | Method of producing foamed polymer materials |
| US5716999A (en) * | 1994-08-15 | 1998-02-10 | Hoechst Aktiengesellschaft | Polyarylene sulfide foams and a process for their production |
| JP2013067735A (en) * | 2011-09-22 | 2013-04-18 | Tosoh Corp | Master batch of foaming agent for polyarylene sulfide resin, method for producing the same, polyarylene sulfide resin composition and foam-molded product comprising the same |
| WO2018178323A1 (en) | 2017-03-31 | 2018-10-04 | Solvay Specialty Polymers Usa, Llc | Foam material comprising polyphenylene sulfide polymer (pps) |
| US11286363B2 (en) * | 2017-03-31 | 2022-03-29 | Solvay Specialty Polymers Usa, Llc | Foam material comprising polyphenylene sulfide polymer (PPS) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040175516A1 (en) * | 1998-10-28 | 2004-09-09 | Gerhard Schmitz | Insulating arrangement for the inner insulation of an aircraft |
| WO2020180301A1 (en) * | 2019-03-05 | 2020-09-10 | Parker-Hannifin Corporation | Tubular assembly comprising low density, low thermal conductivity low thermal effusivity polyarylene sulfide foam |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3925270A (en) * | 1974-06-05 | 1975-12-09 | Uniroyal Inc | Polymeric composition comprising sulfonyl carbazates as blowing agents |
| FR2379370A1 (en) * | 1977-02-08 | 1978-09-01 | Philips Nv | PROCESS FOR THE REALIZATION OF OBJECTS AT LEAST PARTLY IN THERMOPLASTIC MATERIAL FOAM, OBJECTS THUS REALIZED AND DEVICE FOR THE IMPLEMENTATION OF THIS PROCESS |
| FR2379910A1 (en) * | 1977-02-08 | 1978-09-01 | Philips Nv | SEMICONDUCTOR DEVICE AND PROCESS FOR ITS COATING |
| US4183822A (en) * | 1974-04-03 | 1980-01-15 | Fisons Limited | Blowing agent composition |
| US4263409A (en) * | 1974-08-02 | 1981-04-21 | General Electric Company | Process for the production of a foamed thermoplastic composition |
| US4607059A (en) * | 1985-09-25 | 1986-08-19 | Pennwalt Corporation | Gas-releasing composition for tailoring gas evolution of system IR 2811 |
| US4804689A (en) * | 1986-07-02 | 1989-02-14 | Bayer Aktiengesellschaft | Process for holding and foaming thermoplastic polyphenylene sulphide articles and the resultant products |
-
1989
- 1989-07-05 DE DE3922038A patent/DE3922038A1/en not_active Withdrawn
-
1990
- 1990-06-22 EP EP90111807A patent/EP0406634B1/en not_active Expired - Lifetime
- 1990-06-22 DE DE59006408T patent/DE59006408D1/en not_active Expired - Fee Related
- 1990-06-26 US US07/543,555 patent/US5114983A/en not_active Expired - Fee Related
- 1990-06-29 JP JP2170331A patent/JPH03170536A/en active Pending
-
1991
- 1991-10-28 US US07/783,504 patent/US5126380A/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183822A (en) * | 1974-04-03 | 1980-01-15 | Fisons Limited | Blowing agent composition |
| US3925270A (en) * | 1974-06-05 | 1975-12-09 | Uniroyal Inc | Polymeric composition comprising sulfonyl carbazates as blowing agents |
| US4263409A (en) * | 1974-08-02 | 1981-04-21 | General Electric Company | Process for the production of a foamed thermoplastic composition |
| FR2379370A1 (en) * | 1977-02-08 | 1978-09-01 | Philips Nv | PROCESS FOR THE REALIZATION OF OBJECTS AT LEAST PARTLY IN THERMOPLASTIC MATERIAL FOAM, OBJECTS THUS REALIZED AND DEVICE FOR THE IMPLEMENTATION OF THIS PROCESS |
| FR2379910A1 (en) * | 1977-02-08 | 1978-09-01 | Philips Nv | SEMICONDUCTOR DEVICE AND PROCESS FOR ITS COATING |
| GB1594892A (en) * | 1977-02-08 | 1981-08-05 | Philips Nv | Semiconductor devices and the provision of envelopes therefor |
| GB1600427A (en) * | 1977-02-08 | 1981-10-14 | Philips Nv | Method of and apparatus for manufacturing an object consisting completely or partly of a foamed thermoplastic material |
| US4607059A (en) * | 1985-09-25 | 1986-08-19 | Pennwalt Corporation | Gas-releasing composition for tailoring gas evolution of system IR 2811 |
| US4804689A (en) * | 1986-07-02 | 1989-02-14 | Bayer Aktiengesellschaft | Process for holding and foaming thermoplastic polyphenylene sulphide articles and the resultant products |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5412062A (en) * | 1991-09-09 | 1995-05-02 | Cookson Group Plc | Thermally depolymerisable polyoxalate or polymalonate polymers containing hydrocarbon groups with 6-30 carbon atoms and a tertiary carbon atoms attached to bridging oxygen atom |
| US5547996A (en) * | 1994-07-29 | 1996-08-20 | The Center For Innovative Technology | Method of producing foamed polymer materials |
| US5716999A (en) * | 1994-08-15 | 1998-02-10 | Hoechst Aktiengesellschaft | Polyarylene sulfide foams and a process for their production |
| US5789452A (en) * | 1994-08-15 | 1998-08-04 | Ticora Gmbh | Polyarylene sulfide foams and a process for their production |
| JP2013067735A (en) * | 2011-09-22 | 2013-04-18 | Tosoh Corp | Master batch of foaming agent for polyarylene sulfide resin, method for producing the same, polyarylene sulfide resin composition and foam-molded product comprising the same |
| WO2018178323A1 (en) | 2017-03-31 | 2018-10-04 | Solvay Specialty Polymers Usa, Llc | Foam material comprising polyphenylene sulfide polymer (pps) |
| US11286363B2 (en) * | 2017-03-31 | 2022-03-29 | Solvay Specialty Polymers Usa, Llc | Foam material comprising polyphenylene sulfide polymer (PPS) |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0406634B1 (en) | 1994-07-13 |
| JPH03170536A (en) | 1991-07-24 |
| DE59006408D1 (en) | 1994-08-18 |
| DE3922038A1 (en) | 1991-01-17 |
| EP0406634A1 (en) | 1991-01-09 |
| US5126380A (en) | 1992-06-30 |
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